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Net Cost Plus (NCP) — Net Cost Plus (NCP) , also called Full Cost Plus or Return on Total Costs, is a profit level indicator that measures operating profit as a markup on total costs.
Net Cost Plus (NCP), also called Full Cost Plus or Return on Total Costs, is a profit level indicator that measures operating profit as a markup on total costs. It is the standard PLI for cost-driven operations such as contract manufacturers, toll manufacturers, R&D service providers, and shared service centers.
Formula:
Where Total Costs = COGS + Operating Expenses. Equivalently:
The OECD Transfer Pricing Guidelines (2022) recognize net cost plus as a valid profit level indicator under the Transactional Net Margin Method (TNMM) in Chapter II. The Guidelines note that costs may be an appropriate base when the tested party's functions are primarily cost-driven.
US Treasury Regulations §1.482-5(b)(4) recognize financial ratios measuring relationships between profits and costs as acceptable PLIs. The regulations provide that the appropriateness of a PLI depends on whether it provides a reliable measure based on the functions performed, risks assumed, and resources employed by the tested party.
China SAT Public Notice [2017] No. 6, Article 20 defines "Full Cost Mark-up" with EBIT divided by full cost, confirming international acceptance of this PLI.
Net Cost Plus is the default PLI for cost-driven entities—businesses where cost efficiency and cost base utilization are the primary value drivers. This includes:
The PLI works well when:
Net Cost Plus may be less appropriate when:
Tested Party: Contract manufacturer in Eastern Europe producing electronic components for its US parent.
| Metric | Amount |
|---|---|
| Revenue (sales to parent) | €5,200,000 |
| Cost of Goods Sold | €4,000,000 |
| Operating Expenses | €1,000,000 |
| Total Costs | €5,000,000 |
| Operating Profit | €200,000 |
Net Cost Plus Calculation:
If the arm's length range from comparable contract manufacturers is 3.0% – 6.0% NCP, the tested party's result of 4.0% falls within the interquartile range, supporting an arm's length conclusion.
Interpretation: The manufacturer earns a 4% markup on its total cost base, meaning for every €100 of costs incurred, it earns €4 in operating profit.
Common Error: NCP is a markup on costs, not a margin on revenue. Don't confuse the two—they produce different results and are not interchangeable.
| Metric | Formula | Example Result |
|---|---|---|
| Net Cost Plus (markup) | OP ÷ Total Costs | €200,000 ÷ €5,000,000 = 4.0% |
| Operating Margin | OP ÷ Revenue | €200,000 ÷ €5,200,000 = 3.85% |
A 4% cost markup does NOT equal a 4% operating margin. Always verify you're comparing like-for-like PLIs between the tested party and comparables.
The reliability of NCP depends critically on how you define the cost base:
Include:
Consider excluding (if pass-through):
Best Practice: Document your cost base definition clearly. If you exclude pass-through costs, ensure comparables are treated consistently. Inconsistent cost base definitions between tested party and comparables will produce unreliable results.
Use Net Cost Plus when the tested party's value comes from cost efficiency—contract manufacturers, service providers, shared service centers. Use Operating Margin when value comes from sales execution—distributors, sales agents, marketing entities. The key question: "Does this entity get compensated for managing costs or for generating revenue?"
Net Cost Plus (also called Full Cost Plus) uses operating profit divided by total costs (COGS + OPEX). Gross Cost Plus uses gross profit divided by COGS only. Net Cost Plus is more commonly used in TNMM/CPM because it captures the full operating return. Gross Cost Plus is typically associated with the traditional Cost Plus Method (CPM) for goods transactions.
Pass-through costs—where the tested party adds no value—should either be: (1) excluded from the cost base denominator, or (2) included only if comparables treat them the same way. If you include pass-through subcontracting or materials at cost without value-add, it mechanically depresses your NCP result. Document your treatment and be consistent.
Ranges vary by industry, geography, and risk profile. As a rough benchmark: limited-risk contract manufacturers typically show 3%–8% NCP, while full-fledged manufacturers with more functions may show higher markups. Always conduct a proper benchmarking study—generic ranges are not reliable for compliance.
Yes, a negative NCP means the tested party is operating at a loss. Persistent losses require explanation and may indicate pricing isn't arm's length. Loss-making comparables are typically excluded from benchmarking sets unless losses are explained by normal business factors (economic downturn, start-up phase, capacity underutilization).
Different depreciation methods (straight-line vs. accelerated), inventory valuation (FIFO vs. weighted average), and cost allocation methodologies can affect both COGS and OPEX, thereby impacting NCP. When comparing to external comparables, consider whether accounting differences are material and document any adjustments made.
Yes, these terms are interchangeable. Different jurisdictions and practitioners use different names:
All refer to: Operating Profit ÷ (COGS + Operating Expenses).